A/N: If you haven't already, go check out my other story. It's much like this one except the roles are reversed, and it takes place in the Thor story line rather than the Avengers.
...
Thor spent the morning packing diapers, bottles, wipes, baby powder, and clothing.
Loki just sat waiting on Thors bed. He wore prisoners clothing, as he would be expected to while still in Asgard, with a thick diaper underneath.
His mind wondered as he watched Thor try to prepare. He would soon have to face his enemies. His enemies would soon be feeding him, and changing his diapers. They would be cleaning up his bodily functions. He was disgusted. He was horrified.
"I would be better off in the dungeon" he said, almost to no one.
"Brother?," Thor said from the bathroom where he was preparing Lokis toiletry bag.
"Thor, if you make me go I'll kill you" he said, he wanted to scare Thor. He wanted to convince him he was unstable to be around the others. "I'll kill all of them".
"Loki, I wont let you"
"Throw me in the dungeon Thor, save them"
"You're coming"
"I do not deserve such torture"
"We're going to help you"
"I'll kill every single one of them" Loki replied, rolling over onto his stomach. At this point Thor stopped rationalizing with Loki.
...
After a trip through the bifrost they arrived at Stark Tower, where the Avengers were currently staying.
They were greeted at the door by a suspicious looking Pepper Potts. She welcomed them, but was none to warm to Loki.
She showed them to their room, as well as the separate room Thor had requested to store their belongings in.
Loki sat still on their bed while he waited for Thor to finish storing their bags in the storage room. It agitated Loki. Thor had taken all control away from him.
...
"Brother," Thor said, placing a hand on Lokis cheek, "Are you ready?".
Loki pushed him away, "No. But we shall get this over with".
...
They walked into the living room, where the avengers all sat. All eyes immediately fell on Loki, who stood next to Thor with his arms crossed. He tried to stay firm. He was about to be utterly humiliated, but he would not let them see him squirm.
"Well my friends, we're here" Thor addressed them all.
"You're serious?" Tony asked, a grin lighting up his face, "This is happening. I know, you told me he'd be staying here for a while but.. This is great. The god who tried to destroy Earth. Your brother, Loki- The god of fucking mischief- is our house guest now?"
"Yes, well more than a house guest" Thor said, Loki rolled his eyes at him. He was almost proud to be telling this. "Lokis... Well he requires special assistance in some areas. Father and I thought allowing you to help him, for him to be treated as a human, might help him"
"Wait, special assistance how?" Natasha asked. She was noticeably not pleased with the situation. Next to her sat Clint, who could barely stand to look at Loki. Loki looked away from them, he did not want to see the look of satisfaction that would spread across their face when they heard their greatest enemy wore diapers.
"Yes well, Loki often has trouble controlling his bladder. He wears diapers to counter this, and I believe if we treated him as though he wear a human child- bottle fed him, changed his diapers- he would learn to respect us, to understand humans, and feel as though he did have a proper family" the way Thor said it, with such sincerity made Loki sick. No. That was not what he was doing. He was completely humiliating Loki in front of the avengers.
The avengers sat there for a moment, silent. Staring wide eyes at Loki. Eyeing him up, looking for any signs of the diaper.
Tony was the first to break the silence. "So," he said nodding his head slightly, "The evil-space-God mastermind that tried to take over New York, wears diapers?" he said with a smirk.
Clint erupted into uncontrollable laughter.
Bruce got up, flustered from the whole thing, "Oh god" he mumbled under his breathe as he walked out of the room. He wasn't sure what emotion he was feeling, but it was getting to close to what felt like anger for him to completely comfortable.
Loki just looked down at his feet. Stay calm he repeated to himself. Trying to block out the sounds of their voices.
"I really don't remember signing up to be a demi-gods nanny" Natasha said, both disgusted and completely uncomfortable. She was quick to follow Bruce out of the room.
"So, seeing as we're going to be on diaper duty we might as well check and see if he's wet" Tony said, a smirk plastered to his face as he approached Loki. Loki's body tightened up as Tony came closer, and he started to back away.
"It's okay, brother" Thor said to him, placing a hand on his shoulder.
"Thor, no, it isn't" Loki said. Tony grabbed at the waist band of his trousers, "You dare disrespect me in such a way" he said, grabbing Stark's wrists tightly.
"Brother, it is you who are being disrespectful. Stark means only to help" Thor said, tightening his grib on Lokis shoulder.
Loki winced slightly, and apprehensively let go of Stark's wrists.
"Ya little guy, listen to your big brother, Uncle Tony just wants to check your diapy" he mocked, which produced another spell of laughter from Clint.
"Stop this!" Loki commanded, who could no longer pretend to be calm.
"Tony," Steve warned. Tony ignored him, and pulled off Loki's shirt.
"Tony! This isn't necessary!" Steve shouted out.
"Relax, it's what Thor wanted" Tony said, pulling down Loki's trousers. He stood there, completely naked except for the diaper.
Loki was mortified.
Tony, and Clint couldn't contain their laughter. "This is so great", Stark choked out through spouts of laughter.
Loki stood frozen for a second, before he couldn't stand it anymore, and ran.
"Loki!" he heard Thor call after him. But he didn't stop.
He ran through the halls. He needed to be away from them. He didn't even want to hear their voices. He rushed to the room he was assigned to upon their arrival.
He pushed open the door to his room, and slammed it shut behind himself.
He fell to the floor next to the door, and held his head in his hands. He wasn't sure what to do- scream, cry, rip out his hair. He needed to find some way to express the emotions pounding inside of him.
"I hate Thor" he said. "I hate Thor. I hate Thor", it became a mantra. "I hate Thor".
He repeated, barely audible to anyone other than himself. He said it only to release it from himself.
"I hate Thor, I hate him" he continued,
"I hate all of them".
He was shaking. He wanted to fall to the floor and dissolve.
Loki could combat insults. He could take a little ridicule. This was not ridicule. Thor had exposed them to his biggest secret, and his greatest weakness, and they had laughed at him. Loki had felt rejection before, but he had never felt this.
When his bladder, at that moment, decided to empty he lost himself.
It reminded him, no matter how hard he tried and how powerful he became he would always have this problem he couldn't control.
He grabbed fistfuls of hair and pulled. Worthless, he thought. I am worthless. And he pulled harder, til he had pulled out his hair.
This calmed him.
...
Steve inhaled sharply, working up the courage to knock on the door. After the, well, incident as they began to call it, Thor had explained the "rules" to the avengers. Loki was not to have access to his supplies. He was not to feed himself, and he was not to change himself. While Steve wasn't to keen on the idea, he supposed respecting Thor's wishes was the best idea. However, he felt like a complete dick for Tony's actions, and decided now was the best time to start some damage control if this arrangement was to work.
He extended his hand and knocked twice.
He waited.
There was no response.
He knocked again.
"I heard you" he heard through the door. If he didn't know Loki for being such a heartless evil super villain, he would have thought he sounded sad.
"Er, Loki? Can I come in?" Steve said. He barely even knew the god, it felt wrong referring to him by name. What am I doing? He asked himself.
"Do you wish to get another look at how pathetic I look?," Loki asked,
"No I just-"
"Does it amuse you to see me like this? Your greatest enemy, dressed as a helpless infant"
"Loki, I'm not here to laugh at you"
"No?" Loki asked, "Then what would you like to do? Are you here to harm me?"
"No Loki, and I don't want you to feel you're not safe here- I just want to talk" Steve replied, he felt hopeless that he would be able to get through to him.
"I know humans well enough not to trust them"
"Please?" Steve tried.
And to his surprise the door cracked open, Loki was sitting next to it. He sat with his chin against his knees, his arms wrapped around his legs. Still in only a diaper.
"Are you okay?" Steve asked. Loki looked almost broken. It was weird to see Loki, the powerful god, wrapped up in a ball wearing a diaper. He looked.. Sad. Simply sad.
"No" Loki answered, genuinely. For he had nothing to lose. He had nothing to hide from them anymore. "I'm furious. I'm plotting a way in which to make you all pay for what you've done to me".
Steve took a seat down next to Loki. He put a hand on Lokis shoulder. Loki recoiled a bit, but made no move to remove it.
"They didn't mean it" Steve said as he rubbed Lokis shoulder, though he was pretty sure they did mean it. He had to at least try to stick up for his team, as wrong as he thought they were.
"They didn't mean to ridicule me. They didn't mean to strip me of my clothes" Loki said leaning towards Steves touch, Steve could hear the aggravation in his voice, "And Thor didn't mean to stand by.. And allow- no, encourage it to happen". His voice almost broke at the mention of Thor.
"He's just trying to-"
"Did you know, that he promised not to tell anyone?" Loki said, looking down at his knees. "Now, I may not consider Thor a friend, and I may resent him at times... But I had held his word as if it was gold".
"I'm sure he has some sort of reason for it" Steve said, his hand moving to Lokis back.
"He didn't want to leave me in peace in the prison. He selfishly wanted me to come along with him, to be ridiculed by his friends"
"He didn't want to leave you alone with the guards. He thought you would be safe with his friends"
"I trusted him"
"And you still should, he's trying to help"
"You and I have different views on the concepts of trust and help"
Steve and Loki sat together in silence, Steves hand moving across Lokis back. Both facing forward.
Steve didn't know what to say to him, and Loki had nothing else to say.
"Are you hungry?, or... Do you need to be.." Steve asked, his face turning bright red.
Loki looked at him in disgust, "I suppose I'll just start screaming and crying when I need aid. Would that make things easier for you?"
"I'm sorry," Steve said, pulling his hand away "Do you at least want a blanket.. Or a sweater or something? Maybe some pants?".
"I would be very grateful for some clothing"
"Alright" Steve said.
...
When Steve was finished grabbing clothing he walked into the kitchen. Tony, Thor, and Clint sat at the table and watched as he walked in.
"How is he?" Thor was the first to ask. He had a cup of coffee in front of him, it was either untouched or recently filled.
"Not well" Steve answered, putting down the clothes. He turned the element on the stove on, poured a cup of milk into a pot and placed it on the element.
"Before we go feeling sorry for him, lets keep in mind that is the Loki that tried to enslave the human race" Tony said.
"He is my brother" Thor said, stirring his coffee.
"And you don't find it at all hilarious that he shits his pants on occasion? I mean, he's how many thousands of years old?" Tony added.
Clint burst into a fit of laughter. Steve gave Tony a look of disgust, which was nothing compared to the look Thor was giving him.
"Stark, you've taken it to far" Thor said, gripping his coffee mug.
"C'mon, you were laughing earlier. No need to get all serious on me now" Tony replied.
"He still has feelings Tony" Steve said, stirring the milk.
...
Steve returned with a pile of his own clothing. Sweat pants, t-shirts, and a variety of sweaters for Loki to choose from. He held a bottle in his hand too.
Loki picked through the clothes. He picked out a pair of sweat pants, a blue t-shirt, and a black S.H.I.E.L.D pullover hoodie. The clothes fit loosely on him, but he was warm and he didn't feel as exposed.
Loki reached for the bottle in Steves hand, swallowing his pride.
"No," Steve replied and moved the bottle away from Lokis hand, "Thor said you were not to feed yourself".
"Thor is a fool" Loki replied, and again went to grab the bottle.
"Thor is my teammate, and I respect his wishes" he replied, again pulling the bottle away from Loki. "If you want this I'll be glad to feed it to you".
"Surely you're more reasonable than that"
"Loki, please. Let's just get it over with" Steve said.
Loki sighed, and walked over to Steve.
Steve blushed at the sound on Loki's diaper crinkling as he sat down in his lap.
Steve felt weird having the god sit on him, and Loki was obviously not to comfortable with it either. He wraps his arm around Loki's back to support him.
"Well?" Loki said, "I've humiliated myself. Why don't you feed me now?"
"Right, I... Uhm.." Steve fumbled with the bottle, "Here," he said offering it to Lokis lips.
Loki took the nipple of the bottle into his lips and sucked. He was pleasantly surprised to find that the milk was warm.
"Mmh," he said, parting his lips from the bottle.
Steve moved it away from Loki. "I'm not done," Loki said.
He took it into his lips, and again began sucking. Steve watched as the milk disappeared. He felt really weird feeding Loki. He never had much contact with real infants before, he wasn't even sure what he was supposed to be doing.
"I'm done" Loki said. He looked up at Steve, who was staring at him.
"Should I... Should I burp you now?" Steve asked nervously.
"I am perfectly capable of burping on my own" Loki said, climbing down from Steves lap.
"Right um, then... Should I change your... Your diaper?"
"No" Loki answered. He could only imagine how much fun it would be trying to explain to Steve how to change a diaper, nor did he want him to touch him in such a way. He wanted to ask him to allow him to do it himself, but if he wouldn't even let him bottle feed himself he doubted it would work.
"Is it... Um,"
"If it's that hard for you to talk to me you can go back to your friends now"
"No I mean, is your diaper dirty?" he forced himself to ask.
Loki hated hearing that word. It sounded like a curse word to him. His diaper was in fact wet. He had been in it since he left Asgard, and it was well past due for a change. But he lied, "No. I'm fine".
"Are you sure?" Steve said, looking down at his crotch.
"You cannot tell a thing by looking at it, I'm wearing pants" Loki protested, but he proceeded to pull down the sweater. The diaper hung swollen between his thighs.
"I can smell you" Steve said. He didn't want to tell Loki that. But he didn't want him to continue to sit in his own urine either.
Loki felt like an idiot. "Oh" was all he could say. He tried to contain his embarrassment.
"Should I go get Thor?" Steve asked.
"No" Loki said, turning away from Steve. "If you would bring me a diaper and let me change myself I would-",
"Out of the question, sorry" Steve interrupted.